Which graph represents the function below?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20